<p>After testing, I see that the contact header is malformed-- missing the <code>></code> at the end, e.g.:</p>
<pre><code>add_rcv_param("1");
</code></pre>
<p><em>Contact: <sip:1000@192.168.1.116:23439;transport=tcp;avaya-sc-enabled;received=sip:24.228.40.101:23439;transport=TCP</em></p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/kamailio/kamailio/pull/1203#issuecomment-340648076">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/AF36ZVJiYKgr2U0UxudXKh6QNlbeov40ks5sxpE4gaJpZM4OsJJ4">mute the thread</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AF36ZRYJA37lfZPgg4VvufVx5fpm2tOUks5sxpE4gaJpZM4OsJJ4.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
  <link itemprop="url" href="https://github.com/kamailio/kamailio/pull/1203#issuecomment-340648076"></link>
  <meta itemprop="name" content="View Pull Request"></meta>
</div>
<meta itemprop="description" content="View this Pull Request on GitHub"></meta>
</div>

<script type="application/json" data-scope="inboxmarkup">{"api_version":"1.0","publisher":{"api_key":"05dde50f1d1a384dd78767c55493e4bb","name":"GitHub"},"entity":{"external_key":"github/kamailio/kamailio","title":"kamailio/kamailio","subtitle":"GitHub repository","main_image_url":"https://cloud.githubusercontent.com/assets/143418/17495839/a5054eac-5d88-11e6-95fc-7290892c7bb5.png","avatar_image_url":"https://cloud.githubusercontent.com/assets/143418/15842166/7c72db34-2c0b-11e6-9aed-b52498112777.png","action":{"name":"Open in GitHub","url":"https://github.com/kamailio/kamailio"}},"updates":{"snippets":[{"icon":"PERSON","message":"@mattwilliamson in #1203: After testing, I see that the contact header is malformed-- missing the `\u003e` at the end, e.g.:\r\n\r\n    add_rcv_param(\"1\");\r\n\r\n*Contact: \u003csip:1000@192.168.1.116:23439;transport=tcp;avaya-sc-enabled;received=sip:24.228.40.101:23439;transport=TCP*"}],"action":{"name":"View Pull Request","url":"https://github.com/kamailio/kamailio/pull/1203#issuecomment-340648076"}}}</script>